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2012. National Atlas of the United States. This polygon shapefile portrays the state boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer was created by e... National Atlas of the United States.

2014. National Atlas of the United States. This polygon shapefile portrays the state boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer was created by e... National Atlas of the United States.

2014. National Atlas of the United States. This polygon shapefile includes Global Map data showing the counties and equivalent entities of the United States, Puerto Rico, and the U.S. Virgin... National Atlas of the United States.

2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This polygon shapefile depicts internal, first-order administrative boundaries and polygons for all but a few tiny countries. Includes name attribu... North American Cartographic Information Society.

2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This polyline shapefile depicts internal, first-order administrative boundaries and polygons for all but a few tiny countries. Includes name attrib... North American Cartographic Information Society.

2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This polygon shapefile depicts internal, first-order administrative boundaries and polygons for all but a few tiny countries. Includes name attribu... North American Cartographic Information Society.